1 /* 2 * Linux Security plug 3 * 4 * Copyright (C) 2001 WireX Communications, Inc <[email protected]> 5 * Copyright (C) 2001 Greg Kroah-Hartman <[email protected]> 6 * Copyright (C) 2001 Networks Associates Technology, Inc <[email protected]> 7 * Copyright (C) 2001 James Morris <[email protected]> 8 * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group) 9 * Copyright (C) 2016 Mellanox Techonologies 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; either version 2 of the License, or 14 * (at your option) any later version. 15 * 16 * Due to this file being licensed under the GPL there is controversy over 17 * whether this permits you to write a module that #includes this file 18 * without placing your module under the GPL. Please consult a lawyer for 19 * advice before doing this. 20 * 21 */ 22 23 #ifndef __LINUX_SECURITY_H 24 #define __LINUX_SECURITY_H 25 26 #include <linux/kernel_read_file.h> 27 #include <linux/key.h> 28 #include <linux/capability.h> 29 #include <linux/fs.h> 30 #include <linux/slab.h> 31 #include <linux/err.h> 32 #include <linux/string.h> 33 #include <linux/mm.h> 34 35 struct linux_binprm; 36 struct cred; 37 struct rlimit; 38 struct kernel_siginfo; 39 struct sembuf; 40 struct kern_ipc_perm; 41 struct audit_context; 42 struct super_block; 43 struct inode; 44 struct dentry; 45 struct file; 46 struct vfsmount; 47 struct path; 48 struct qstr; 49 struct iattr; 50 struct fown_struct; 51 struct file_operations; 52 struct msg_msg; 53 struct xattr; 54 struct kernfs_node; 55 struct xfrm_sec_ctx; 56 struct mm_struct; 57 struct fs_context; 58 struct fs_parameter; 59 enum fs_value_type; 60 struct watch; 61 struct watch_notification; 62 63 /* Default (no) options for the capable function */ 64 #define CAP_OPT_NONE 0x0 65 /* If capable should audit the security request */ 66 #define CAP_OPT_NOAUDIT BIT(1) 67 /* If capable is being called by a setid function */ 68 #define CAP_OPT_INSETID BIT(2) 69 70 /* LSM Agnostic defines for fs_context::lsm_flags */ 71 #define SECURITY_LSM_NATIVE_LABELS 1 72 73 struct ctl_table; 74 struct audit_krule; 75 struct user_namespace; 76 struct timezone; 77 78 enum lsm_event { 79 LSM_POLICY_CHANGE, 80 }; 81 82 /* 83 * These are reasons that can be passed to the security_locked_down() 84 * LSM hook. Lockdown reasons that protect kernel integrity (ie, the 85 * ability for userland to modify kernel code) are placed before 86 * LOCKDOWN_INTEGRITY_MAX. Lockdown reasons that protect kernel 87 * confidentiality (ie, the ability for userland to extract 88 * information from the running kernel that would otherwise be 89 * restricted) are placed before LOCKDOWN_CONFIDENTIALITY_MAX. 90 * 91 * LSM authors should note that the semantics of any given lockdown 92 * reason are not guaranteed to be stable - the same reason may block 93 * one set of features in one kernel release, and a slightly different 94 * set of features in a later kernel release. LSMs that seek to expose 95 * lockdown policy at any level of granularity other than "none", 96 * "integrity" or "confidentiality" are responsible for either 97 * ensuring that they expose a consistent level of functionality to 98 * userland, or ensuring that userland is aware that this is 99 * potentially a moving target. It is easy to misuse this information 100 * in a way that could break userspace. Please be careful not to do 101 * so. 102 * 103 * If you add to this, remember to extend lockdown_reasons in 104 * security/lockdown/lockdown.c. 105 */ 106 enum lockdown_reason { 107 LOCKDOWN_NONE, 108 LOCKDOWN_MODULE_SIGNATURE, 109 LOCKDOWN_DEV_MEM, 110 LOCKDOWN_EFI_TEST, 111 LOCKDOWN_KEXEC, 112 LOCKDOWN_HIBERNATION, 113 LOCKDOWN_PCI_ACCESS, 114 LOCKDOWN_IOPORT, 115 LOCKDOWN_MSR, 116 LOCKDOWN_ACPI_TABLES, 117 LOCKDOWN_PCMCIA_CIS, 118 LOCKDOWN_TIOCSSERIAL, 119 LOCKDOWN_MODULE_PARAMETERS, 120 LOCKDOWN_MMIOTRACE, 121 LOCKDOWN_DEBUGFS, 122 LOCKDOWN_XMON_WR, 123 LOCKDOWN_INTEGRITY_MAX, 124 LOCKDOWN_KCORE, 125 LOCKDOWN_KPROBES, 126 LOCKDOWN_BPF_READ, 127 LOCKDOWN_PERF, 128 LOCKDOWN_TRACEFS, 129 LOCKDOWN_XMON_RW, 130 LOCKDOWN_XFRM_SECRET, 131 LOCKDOWN_CONFIDENTIALITY_MAX, 132 }; 133 134 extern const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1]; 135 136 /* These functions are in security/commoncap.c */ 137 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 138 int cap, unsigned int opts); 139 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 140 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 141 extern int cap_ptrace_traceme(struct task_struct *parent); 142 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 143 extern int cap_capset(struct cred *new, const struct cred *old, 144 const kernel_cap_t *effective, 145 const kernel_cap_t *inheritable, 146 const kernel_cap_t *permitted); 147 extern int cap_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file); 148 extern int cap_inode_setxattr(struct dentry *dentry, const char *name, 149 const void *value, size_t size, int flags); 150 extern int cap_inode_removexattr(struct dentry *dentry, const char *name); 151 extern int cap_inode_need_killpriv(struct dentry *dentry); 152 extern int cap_inode_killpriv(struct dentry *dentry); 153 extern int cap_inode_getsecurity(struct inode *inode, const char *name, 154 void **buffer, bool alloc); 155 extern int cap_mmap_addr(unsigned long addr); 156 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 157 unsigned long prot, unsigned long flags); 158 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 159 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 160 unsigned long arg4, unsigned long arg5); 161 extern int cap_task_setscheduler(struct task_struct *p); 162 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 163 extern int cap_task_setnice(struct task_struct *p, int nice); 164 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 165 166 struct msghdr; 167 struct sk_buff; 168 struct sock; 169 struct sockaddr; 170 struct socket; 171 struct flowi_common; 172 struct dst_entry; 173 struct xfrm_selector; 174 struct xfrm_policy; 175 struct xfrm_state; 176 struct xfrm_user_sec_ctx; 177 struct seq_file; 178 struct sctp_endpoint; 179 180 #ifdef CONFIG_MMU 181 extern unsigned long mmap_min_addr; 182 extern unsigned long dac_mmap_min_addr; 183 #else 184 #define mmap_min_addr 0UL 185 #define dac_mmap_min_addr 0UL 186 #endif 187 188 /* 189 * Values used in the task_security_ops calls 190 */ 191 /* setuid or setgid, id0 == uid or gid */ 192 #define LSM_SETID_ID 1 193 194 /* setreuid or setregid, id0 == real, id1 == eff */ 195 #define LSM_SETID_RE 2 196 197 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 198 #define LSM_SETID_RES 4 199 200 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 201 #define LSM_SETID_FS 8 202 203 /* Flags for security_task_prlimit(). */ 204 #define LSM_PRLIMIT_READ 1 205 #define LSM_PRLIMIT_WRITE 2 206 207 /* forward declares to avoid warnings */ 208 struct sched_param; 209 struct request_sock; 210 211 /* bprm->unsafe reasons */ 212 #define LSM_UNSAFE_SHARE 1 213 #define LSM_UNSAFE_PTRACE 2 214 #define LSM_UNSAFE_NO_NEW_PRIVS 4 215 216 #ifdef CONFIG_MMU 217 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 218 void *buffer, size_t *lenp, loff_t *ppos); 219 #endif 220 221 /* security_inode_init_security callback function to write xattrs */ 222 typedef int (*initxattrs) (struct inode *inode, 223 const struct xattr *xattr_array, void *fs_data); 224 225 226 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 227 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 228 #define __data_id_stringify(dummy, str) #str, 229 230 enum kernel_load_data_id { 231 __kernel_read_file_id(__data_id_enumify) 232 }; 233 234 static const char * const kernel_load_data_str[] = { 235 __kernel_read_file_id(__data_id_stringify) 236 }; 237 238 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 239 { 240 if ((unsigned)id >= LOADING_MAX_ID) 241 return kernel_load_data_str[LOADING_UNKNOWN]; 242 243 return kernel_load_data_str[id]; 244 } 245 246 #ifdef CONFIG_SECURITY 247 248 int call_blocking_lsm_notifier(enum lsm_event event, void *data); 249 int register_blocking_lsm_notifier(struct notifier_block *nb); 250 int unregister_blocking_lsm_notifier(struct notifier_block *nb); 251 252 /* prototypes */ 253 extern int security_init(void); 254 extern int early_security_init(void); 255 256 /* Security operations */ 257 int security_binder_set_context_mgr(struct task_struct *mgr); 258 int security_binder_transaction(struct task_struct *from, 259 struct task_struct *to); 260 int security_binder_transfer_binder(struct task_struct *from, 261 struct task_struct *to); 262 int security_binder_transfer_file(struct task_struct *from, 263 struct task_struct *to, struct file *file); 264 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 265 int security_ptrace_traceme(struct task_struct *parent); 266 int security_capget(struct task_struct *target, 267 kernel_cap_t *effective, 268 kernel_cap_t *inheritable, 269 kernel_cap_t *permitted); 270 int security_capset(struct cred *new, const struct cred *old, 271 const kernel_cap_t *effective, 272 const kernel_cap_t *inheritable, 273 const kernel_cap_t *permitted); 274 int security_capable(const struct cred *cred, 275 struct user_namespace *ns, 276 int cap, 277 unsigned int opts); 278 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 279 int security_quota_on(struct dentry *dentry); 280 int security_syslog(int type); 281 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 282 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 283 int security_bprm_creds_for_exec(struct linux_binprm *bprm); 284 int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file); 285 int security_bprm_check(struct linux_binprm *bprm); 286 void security_bprm_committing_creds(struct linux_binprm *bprm); 287 void security_bprm_committed_creds(struct linux_binprm *bprm); 288 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 289 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 290 int security_sb_alloc(struct super_block *sb); 291 void security_sb_free(struct super_block *sb); 292 void security_free_mnt_opts(void **mnt_opts); 293 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 294 int security_sb_remount(struct super_block *sb, void *mnt_opts); 295 int security_sb_kern_mount(struct super_block *sb); 296 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 297 int security_sb_statfs(struct dentry *dentry); 298 int security_sb_mount(const char *dev_name, const struct path *path, 299 const char *type, unsigned long flags, void *data); 300 int security_sb_umount(struct vfsmount *mnt, int flags); 301 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 302 int security_sb_set_mnt_opts(struct super_block *sb, 303 void *mnt_opts, 304 unsigned long kern_flags, 305 unsigned long *set_kern_flags); 306 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 307 struct super_block *newsb, 308 unsigned long kern_flags, 309 unsigned long *set_kern_flags); 310 int security_add_mnt_opt(const char *option, const char *val, 311 int len, void **mnt_opts); 312 int security_move_mount(const struct path *from_path, const struct path *to_path); 313 int security_dentry_init_security(struct dentry *dentry, int mode, 314 const struct qstr *name, void **ctx, 315 u32 *ctxlen); 316 int security_dentry_create_files_as(struct dentry *dentry, int mode, 317 struct qstr *name, 318 const struct cred *old, 319 struct cred *new); 320 int security_path_notify(const struct path *path, u64 mask, 321 unsigned int obj_type); 322 int security_inode_alloc(struct inode *inode); 323 void security_inode_free(struct inode *inode); 324 int security_inode_init_security(struct inode *inode, struct inode *dir, 325 const struct qstr *qstr, 326 initxattrs initxattrs, void *fs_data); 327 int security_inode_init_security_anon(struct inode *inode, 328 const struct qstr *name, 329 const struct inode *context_inode); 330 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 331 const struct qstr *qstr, const char **name, 332 void **value, size_t *len); 333 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 334 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 335 struct dentry *new_dentry); 336 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 337 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 338 const char *old_name); 339 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 340 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 341 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 342 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 343 struct inode *new_dir, struct dentry *new_dentry, 344 unsigned int flags); 345 int security_inode_readlink(struct dentry *dentry); 346 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 347 bool rcu); 348 int security_inode_permission(struct inode *inode, int mask); 349 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 350 int security_inode_getattr(const struct path *path); 351 int security_inode_setxattr(struct dentry *dentry, const char *name, 352 const void *value, size_t size, int flags); 353 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 354 const void *value, size_t size, int flags); 355 int security_inode_getxattr(struct dentry *dentry, const char *name); 356 int security_inode_listxattr(struct dentry *dentry); 357 int security_inode_removexattr(struct dentry *dentry, const char *name); 358 int security_inode_need_killpriv(struct dentry *dentry); 359 int security_inode_killpriv(struct dentry *dentry); 360 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc); 361 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 362 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 363 void security_inode_getsecid(struct inode *inode, u32 *secid); 364 int security_inode_copy_up(struct dentry *src, struct cred **new); 365 int security_inode_copy_up_xattr(const char *name); 366 int security_kernfs_init_security(struct kernfs_node *kn_dir, 367 struct kernfs_node *kn); 368 int security_file_permission(struct file *file, int mask); 369 int security_file_alloc(struct file *file); 370 void security_file_free(struct file *file); 371 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 372 int security_mmap_file(struct file *file, unsigned long prot, 373 unsigned long flags); 374 int security_mmap_addr(unsigned long addr); 375 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 376 unsigned long prot); 377 int security_file_lock(struct file *file, unsigned int cmd); 378 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 379 void security_file_set_fowner(struct file *file); 380 int security_file_send_sigiotask(struct task_struct *tsk, 381 struct fown_struct *fown, int sig); 382 int security_file_receive(struct file *file); 383 int security_file_open(struct file *file); 384 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 385 void security_task_free(struct task_struct *task); 386 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 387 void security_cred_free(struct cred *cred); 388 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 389 void security_transfer_creds(struct cred *new, const struct cred *old); 390 void security_cred_getsecid(const struct cred *c, u32 *secid); 391 int security_kernel_act_as(struct cred *new, u32 secid); 392 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 393 int security_kernel_module_request(char *kmod_name); 394 int security_kernel_load_data(enum kernel_load_data_id id, bool contents); 395 int security_kernel_post_load_data(char *buf, loff_t size, 396 enum kernel_load_data_id id, 397 char *description); 398 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id, 399 bool contents); 400 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 401 enum kernel_read_file_id id); 402 int security_task_fix_setuid(struct cred *new, const struct cred *old, 403 int flags); 404 int security_task_fix_setgid(struct cred *new, const struct cred *old, 405 int flags); 406 int security_task_setpgid(struct task_struct *p, pid_t pgid); 407 int security_task_getpgid(struct task_struct *p); 408 int security_task_getsid(struct task_struct *p); 409 void security_task_getsecid(struct task_struct *p, u32 *secid); 410 int security_task_setnice(struct task_struct *p, int nice); 411 int security_task_setioprio(struct task_struct *p, int ioprio); 412 int security_task_getioprio(struct task_struct *p); 413 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 414 unsigned int flags); 415 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 416 struct rlimit *new_rlim); 417 int security_task_setscheduler(struct task_struct *p); 418 int security_task_getscheduler(struct task_struct *p); 419 int security_task_movememory(struct task_struct *p); 420 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 421 int sig, const struct cred *cred); 422 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 423 unsigned long arg4, unsigned long arg5); 424 void security_task_to_inode(struct task_struct *p, struct inode *inode); 425 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 426 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 427 int security_msg_msg_alloc(struct msg_msg *msg); 428 void security_msg_msg_free(struct msg_msg *msg); 429 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 430 void security_msg_queue_free(struct kern_ipc_perm *msq); 431 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 432 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 433 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 434 struct msg_msg *msg, int msqflg); 435 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 436 struct task_struct *target, long type, int mode); 437 int security_shm_alloc(struct kern_ipc_perm *shp); 438 void security_shm_free(struct kern_ipc_perm *shp); 439 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 440 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 441 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 442 int security_sem_alloc(struct kern_ipc_perm *sma); 443 void security_sem_free(struct kern_ipc_perm *sma); 444 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 445 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 446 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 447 unsigned nsops, int alter); 448 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 449 int security_getprocattr(struct task_struct *p, const char *lsm, char *name, 450 char **value); 451 int security_setprocattr(const char *lsm, const char *name, void *value, 452 size_t size); 453 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 454 int security_ismaclabel(const char *name); 455 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 456 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 457 void security_release_secctx(char *secdata, u32 seclen); 458 void security_inode_invalidate_secctx(struct inode *inode); 459 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 460 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 461 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 462 int security_locked_down(enum lockdown_reason what); 463 #else /* CONFIG_SECURITY */ 464 465 static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data) 466 { 467 return 0; 468 } 469 470 static inline int register_blocking_lsm_notifier(struct notifier_block *nb) 471 { 472 return 0; 473 } 474 475 static inline int unregister_blocking_lsm_notifier(struct notifier_block *nb) 476 { 477 return 0; 478 } 479 480 static inline void security_free_mnt_opts(void **mnt_opts) 481 { 482 } 483 484 /* 485 * This is the default capabilities functionality. Most of these functions 486 * are just stubbed out, but a few must call the proper capable code. 487 */ 488 489 static inline int security_init(void) 490 { 491 return 0; 492 } 493 494 static inline int early_security_init(void) 495 { 496 return 0; 497 } 498 499 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 500 { 501 return 0; 502 } 503 504 static inline int security_binder_transaction(struct task_struct *from, 505 struct task_struct *to) 506 { 507 return 0; 508 } 509 510 static inline int security_binder_transfer_binder(struct task_struct *from, 511 struct task_struct *to) 512 { 513 return 0; 514 } 515 516 static inline int security_binder_transfer_file(struct task_struct *from, 517 struct task_struct *to, 518 struct file *file) 519 { 520 return 0; 521 } 522 523 static inline int security_ptrace_access_check(struct task_struct *child, 524 unsigned int mode) 525 { 526 return cap_ptrace_access_check(child, mode); 527 } 528 529 static inline int security_ptrace_traceme(struct task_struct *parent) 530 { 531 return cap_ptrace_traceme(parent); 532 } 533 534 static inline int security_capget(struct task_struct *target, 535 kernel_cap_t *effective, 536 kernel_cap_t *inheritable, 537 kernel_cap_t *permitted) 538 { 539 return cap_capget(target, effective, inheritable, permitted); 540 } 541 542 static inline int security_capset(struct cred *new, 543 const struct cred *old, 544 const kernel_cap_t *effective, 545 const kernel_cap_t *inheritable, 546 const kernel_cap_t *permitted) 547 { 548 return cap_capset(new, old, effective, inheritable, permitted); 549 } 550 551 static inline int security_capable(const struct cred *cred, 552 struct user_namespace *ns, 553 int cap, 554 unsigned int opts) 555 { 556 return cap_capable(cred, ns, cap, opts); 557 } 558 559 static inline int security_quotactl(int cmds, int type, int id, 560 struct super_block *sb) 561 { 562 return 0; 563 } 564 565 static inline int security_quota_on(struct dentry *dentry) 566 { 567 return 0; 568 } 569 570 static inline int security_syslog(int type) 571 { 572 return 0; 573 } 574 575 static inline int security_settime64(const struct timespec64 *ts, 576 const struct timezone *tz) 577 { 578 return cap_settime(ts, tz); 579 } 580 581 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 582 { 583 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 584 } 585 586 static inline int security_bprm_creds_for_exec(struct linux_binprm *bprm) 587 { 588 return 0; 589 } 590 591 static inline int security_bprm_creds_from_file(struct linux_binprm *bprm, 592 struct file *file) 593 { 594 return cap_bprm_creds_from_file(bprm, file); 595 } 596 597 static inline int security_bprm_check(struct linux_binprm *bprm) 598 { 599 return 0; 600 } 601 602 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 603 { 604 } 605 606 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 607 { 608 } 609 610 static inline int security_fs_context_dup(struct fs_context *fc, 611 struct fs_context *src_fc) 612 { 613 return 0; 614 } 615 static inline int security_fs_context_parse_param(struct fs_context *fc, 616 struct fs_parameter *param) 617 { 618 return -ENOPARAM; 619 } 620 621 static inline int security_sb_alloc(struct super_block *sb) 622 { 623 return 0; 624 } 625 626 static inline void security_sb_free(struct super_block *sb) 627 { } 628 629 static inline int security_sb_eat_lsm_opts(char *options, 630 void **mnt_opts) 631 { 632 return 0; 633 } 634 635 static inline int security_sb_remount(struct super_block *sb, 636 void *mnt_opts) 637 { 638 return 0; 639 } 640 641 static inline int security_sb_kern_mount(struct super_block *sb) 642 { 643 return 0; 644 } 645 646 static inline int security_sb_show_options(struct seq_file *m, 647 struct super_block *sb) 648 { 649 return 0; 650 } 651 652 static inline int security_sb_statfs(struct dentry *dentry) 653 { 654 return 0; 655 } 656 657 static inline int security_sb_mount(const char *dev_name, const struct path *path, 658 const char *type, unsigned long flags, 659 void *data) 660 { 661 return 0; 662 } 663 664 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 665 { 666 return 0; 667 } 668 669 static inline int security_sb_pivotroot(const struct path *old_path, 670 const struct path *new_path) 671 { 672 return 0; 673 } 674 675 static inline int security_sb_set_mnt_opts(struct super_block *sb, 676 void *mnt_opts, 677 unsigned long kern_flags, 678 unsigned long *set_kern_flags) 679 { 680 return 0; 681 } 682 683 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 684 struct super_block *newsb, 685 unsigned long kern_flags, 686 unsigned long *set_kern_flags) 687 { 688 return 0; 689 } 690 691 static inline int security_add_mnt_opt(const char *option, const char *val, 692 int len, void **mnt_opts) 693 { 694 return 0; 695 } 696 697 static inline int security_move_mount(const struct path *from_path, 698 const struct path *to_path) 699 { 700 return 0; 701 } 702 703 static inline int security_path_notify(const struct path *path, u64 mask, 704 unsigned int obj_type) 705 { 706 return 0; 707 } 708 709 static inline int security_inode_alloc(struct inode *inode) 710 { 711 return 0; 712 } 713 714 static inline void security_inode_free(struct inode *inode) 715 { } 716 717 static inline int security_dentry_init_security(struct dentry *dentry, 718 int mode, 719 const struct qstr *name, 720 void **ctx, 721 u32 *ctxlen) 722 { 723 return -EOPNOTSUPP; 724 } 725 726 static inline int security_dentry_create_files_as(struct dentry *dentry, 727 int mode, struct qstr *name, 728 const struct cred *old, 729 struct cred *new) 730 { 731 return 0; 732 } 733 734 735 static inline int security_inode_init_security(struct inode *inode, 736 struct inode *dir, 737 const struct qstr *qstr, 738 const initxattrs xattrs, 739 void *fs_data) 740 { 741 return 0; 742 } 743 744 static inline int security_inode_init_security_anon(struct inode *inode, 745 const struct qstr *name, 746 const struct inode *context_inode) 747 { 748 return 0; 749 } 750 751 static inline int security_old_inode_init_security(struct inode *inode, 752 struct inode *dir, 753 const struct qstr *qstr, 754 const char **name, 755 void **value, size_t *len) 756 { 757 return -EOPNOTSUPP; 758 } 759 760 static inline int security_inode_create(struct inode *dir, 761 struct dentry *dentry, 762 umode_t mode) 763 { 764 return 0; 765 } 766 767 static inline int security_inode_link(struct dentry *old_dentry, 768 struct inode *dir, 769 struct dentry *new_dentry) 770 { 771 return 0; 772 } 773 774 static inline int security_inode_unlink(struct inode *dir, 775 struct dentry *dentry) 776 { 777 return 0; 778 } 779 780 static inline int security_inode_symlink(struct inode *dir, 781 struct dentry *dentry, 782 const char *old_name) 783 { 784 return 0; 785 } 786 787 static inline int security_inode_mkdir(struct inode *dir, 788 struct dentry *dentry, 789 int mode) 790 { 791 return 0; 792 } 793 794 static inline int security_inode_rmdir(struct inode *dir, 795 struct dentry *dentry) 796 { 797 return 0; 798 } 799 800 static inline int security_inode_mknod(struct inode *dir, 801 struct dentry *dentry, 802 int mode, dev_t dev) 803 { 804 return 0; 805 } 806 807 static inline int security_inode_rename(struct inode *old_dir, 808 struct dentry *old_dentry, 809 struct inode *new_dir, 810 struct dentry *new_dentry, 811 unsigned int flags) 812 { 813 return 0; 814 } 815 816 static inline int security_inode_readlink(struct dentry *dentry) 817 { 818 return 0; 819 } 820 821 static inline int security_inode_follow_link(struct dentry *dentry, 822 struct inode *inode, 823 bool rcu) 824 { 825 return 0; 826 } 827 828 static inline int security_inode_permission(struct inode *inode, int mask) 829 { 830 return 0; 831 } 832 833 static inline int security_inode_setattr(struct dentry *dentry, 834 struct iattr *attr) 835 { 836 return 0; 837 } 838 839 static inline int security_inode_getattr(const struct path *path) 840 { 841 return 0; 842 } 843 844 static inline int security_inode_setxattr(struct dentry *dentry, 845 const char *name, const void *value, size_t size, int flags) 846 { 847 return cap_inode_setxattr(dentry, name, value, size, flags); 848 } 849 850 static inline void security_inode_post_setxattr(struct dentry *dentry, 851 const char *name, const void *value, size_t size, int flags) 852 { } 853 854 static inline int security_inode_getxattr(struct dentry *dentry, 855 const char *name) 856 { 857 return 0; 858 } 859 860 static inline int security_inode_listxattr(struct dentry *dentry) 861 { 862 return 0; 863 } 864 865 static inline int security_inode_removexattr(struct dentry *dentry, 866 const char *name) 867 { 868 return cap_inode_removexattr(dentry, name); 869 } 870 871 static inline int security_inode_need_killpriv(struct dentry *dentry) 872 { 873 return cap_inode_need_killpriv(dentry); 874 } 875 876 static inline int security_inode_killpriv(struct dentry *dentry) 877 { 878 return cap_inode_killpriv(dentry); 879 } 880 881 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 882 { 883 return cap_inode_getsecurity(inode, name, buffer, alloc); 884 } 885 886 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 887 { 888 return -EOPNOTSUPP; 889 } 890 891 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 892 { 893 return 0; 894 } 895 896 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 897 { 898 *secid = 0; 899 } 900 901 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 902 { 903 return 0; 904 } 905 906 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 907 struct kernfs_node *kn) 908 { 909 return 0; 910 } 911 912 static inline int security_inode_copy_up_xattr(const char *name) 913 { 914 return -EOPNOTSUPP; 915 } 916 917 static inline int security_file_permission(struct file *file, int mask) 918 { 919 return 0; 920 } 921 922 static inline int security_file_alloc(struct file *file) 923 { 924 return 0; 925 } 926 927 static inline void security_file_free(struct file *file) 928 { } 929 930 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 931 unsigned long arg) 932 { 933 return 0; 934 } 935 936 static inline int security_mmap_file(struct file *file, unsigned long prot, 937 unsigned long flags) 938 { 939 return 0; 940 } 941 942 static inline int security_mmap_addr(unsigned long addr) 943 { 944 return cap_mmap_addr(addr); 945 } 946 947 static inline int security_file_mprotect(struct vm_area_struct *vma, 948 unsigned long reqprot, 949 unsigned long prot) 950 { 951 return 0; 952 } 953 954 static inline int security_file_lock(struct file *file, unsigned int cmd) 955 { 956 return 0; 957 } 958 959 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 960 unsigned long arg) 961 { 962 return 0; 963 } 964 965 static inline void security_file_set_fowner(struct file *file) 966 { 967 return; 968 } 969 970 static inline int security_file_send_sigiotask(struct task_struct *tsk, 971 struct fown_struct *fown, 972 int sig) 973 { 974 return 0; 975 } 976 977 static inline int security_file_receive(struct file *file) 978 { 979 return 0; 980 } 981 982 static inline int security_file_open(struct file *file) 983 { 984 return 0; 985 } 986 987 static inline int security_task_alloc(struct task_struct *task, 988 unsigned long clone_flags) 989 { 990 return 0; 991 } 992 993 static inline void security_task_free(struct task_struct *task) 994 { } 995 996 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 997 { 998 return 0; 999 } 1000 1001 static inline void security_cred_free(struct cred *cred) 1002 { } 1003 1004 static inline int security_prepare_creds(struct cred *new, 1005 const struct cred *old, 1006 gfp_t gfp) 1007 { 1008 return 0; 1009 } 1010 1011 static inline void security_transfer_creds(struct cred *new, 1012 const struct cred *old) 1013 { 1014 } 1015 1016 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 1017 { 1018 return 0; 1019 } 1020 1021 static inline int security_kernel_create_files_as(struct cred *cred, 1022 struct inode *inode) 1023 { 1024 return 0; 1025 } 1026 1027 static inline int security_kernel_module_request(char *kmod_name) 1028 { 1029 return 0; 1030 } 1031 1032 static inline int security_kernel_load_data(enum kernel_load_data_id id, bool contents) 1033 { 1034 return 0; 1035 } 1036 1037 static inline int security_kernel_post_load_data(char *buf, loff_t size, 1038 enum kernel_load_data_id id, 1039 char *description) 1040 { 1041 return 0; 1042 } 1043 1044 static inline int security_kernel_read_file(struct file *file, 1045 enum kernel_read_file_id id, 1046 bool contents) 1047 { 1048 return 0; 1049 } 1050 1051 static inline int security_kernel_post_read_file(struct file *file, 1052 char *buf, loff_t size, 1053 enum kernel_read_file_id id) 1054 { 1055 return 0; 1056 } 1057 1058 static inline int security_task_fix_setuid(struct cred *new, 1059 const struct cred *old, 1060 int flags) 1061 { 1062 return cap_task_fix_setuid(new, old, flags); 1063 } 1064 1065 static inline int security_task_fix_setgid(struct cred *new, 1066 const struct cred *old, 1067 int flags) 1068 { 1069 return 0; 1070 } 1071 1072 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1073 { 1074 return 0; 1075 } 1076 1077 static inline int security_task_getpgid(struct task_struct *p) 1078 { 1079 return 0; 1080 } 1081 1082 static inline int security_task_getsid(struct task_struct *p) 1083 { 1084 return 0; 1085 } 1086 1087 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 1088 { 1089 *secid = 0; 1090 } 1091 1092 static inline int security_task_setnice(struct task_struct *p, int nice) 1093 { 1094 return cap_task_setnice(p, nice); 1095 } 1096 1097 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1098 { 1099 return cap_task_setioprio(p, ioprio); 1100 } 1101 1102 static inline int security_task_getioprio(struct task_struct *p) 1103 { 1104 return 0; 1105 } 1106 1107 static inline int security_task_prlimit(const struct cred *cred, 1108 const struct cred *tcred, 1109 unsigned int flags) 1110 { 1111 return 0; 1112 } 1113 1114 static inline int security_task_setrlimit(struct task_struct *p, 1115 unsigned int resource, 1116 struct rlimit *new_rlim) 1117 { 1118 return 0; 1119 } 1120 1121 static inline int security_task_setscheduler(struct task_struct *p) 1122 { 1123 return cap_task_setscheduler(p); 1124 } 1125 1126 static inline int security_task_getscheduler(struct task_struct *p) 1127 { 1128 return 0; 1129 } 1130 1131 static inline int security_task_movememory(struct task_struct *p) 1132 { 1133 return 0; 1134 } 1135 1136 static inline int security_task_kill(struct task_struct *p, 1137 struct kernel_siginfo *info, int sig, 1138 const struct cred *cred) 1139 { 1140 return 0; 1141 } 1142 1143 static inline int security_task_prctl(int option, unsigned long arg2, 1144 unsigned long arg3, 1145 unsigned long arg4, 1146 unsigned long arg5) 1147 { 1148 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1149 } 1150 1151 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1152 { } 1153 1154 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1155 short flag) 1156 { 1157 return 0; 1158 } 1159 1160 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1161 { 1162 *secid = 0; 1163 } 1164 1165 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1166 { 1167 return 0; 1168 } 1169 1170 static inline void security_msg_msg_free(struct msg_msg *msg) 1171 { } 1172 1173 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1174 { 1175 return 0; 1176 } 1177 1178 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1179 { } 1180 1181 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1182 int msqflg) 1183 { 1184 return 0; 1185 } 1186 1187 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1188 { 1189 return 0; 1190 } 1191 1192 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1193 struct msg_msg *msg, int msqflg) 1194 { 1195 return 0; 1196 } 1197 1198 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1199 struct msg_msg *msg, 1200 struct task_struct *target, 1201 long type, int mode) 1202 { 1203 return 0; 1204 } 1205 1206 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1207 { 1208 return 0; 1209 } 1210 1211 static inline void security_shm_free(struct kern_ipc_perm *shp) 1212 { } 1213 1214 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1215 int shmflg) 1216 { 1217 return 0; 1218 } 1219 1220 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1221 { 1222 return 0; 1223 } 1224 1225 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1226 char __user *shmaddr, int shmflg) 1227 { 1228 return 0; 1229 } 1230 1231 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1232 { 1233 return 0; 1234 } 1235 1236 static inline void security_sem_free(struct kern_ipc_perm *sma) 1237 { } 1238 1239 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1240 { 1241 return 0; 1242 } 1243 1244 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1245 { 1246 return 0; 1247 } 1248 1249 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1250 struct sembuf *sops, unsigned nsops, 1251 int alter) 1252 { 1253 return 0; 1254 } 1255 1256 static inline void security_d_instantiate(struct dentry *dentry, 1257 struct inode *inode) 1258 { } 1259 1260 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1261 char *name, char **value) 1262 { 1263 return -EINVAL; 1264 } 1265 1266 static inline int security_setprocattr(const char *lsm, char *name, 1267 void *value, size_t size) 1268 { 1269 return -EINVAL; 1270 } 1271 1272 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1273 { 1274 return 0; 1275 } 1276 1277 static inline int security_ismaclabel(const char *name) 1278 { 1279 return 0; 1280 } 1281 1282 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1283 { 1284 return -EOPNOTSUPP; 1285 } 1286 1287 static inline int security_secctx_to_secid(const char *secdata, 1288 u32 seclen, 1289 u32 *secid) 1290 { 1291 return -EOPNOTSUPP; 1292 } 1293 1294 static inline void security_release_secctx(char *secdata, u32 seclen) 1295 { 1296 } 1297 1298 static inline void security_inode_invalidate_secctx(struct inode *inode) 1299 { 1300 } 1301 1302 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1303 { 1304 return -EOPNOTSUPP; 1305 } 1306 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1307 { 1308 return -EOPNOTSUPP; 1309 } 1310 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1311 { 1312 return -EOPNOTSUPP; 1313 } 1314 static inline int security_locked_down(enum lockdown_reason what) 1315 { 1316 return 0; 1317 } 1318 #endif /* CONFIG_SECURITY */ 1319 1320 #if defined(CONFIG_SECURITY) && defined(CONFIG_WATCH_QUEUE) 1321 int security_post_notification(const struct cred *w_cred, 1322 const struct cred *cred, 1323 struct watch_notification *n); 1324 #else 1325 static inline int security_post_notification(const struct cred *w_cred, 1326 const struct cred *cred, 1327 struct watch_notification *n) 1328 { 1329 return 0; 1330 } 1331 #endif 1332 1333 #if defined(CONFIG_SECURITY) && defined(CONFIG_KEY_NOTIFICATIONS) 1334 int security_watch_key(struct key *key); 1335 #else 1336 static inline int security_watch_key(struct key *key) 1337 { 1338 return 0; 1339 } 1340 #endif 1341 1342 #ifdef CONFIG_SECURITY_NETWORK 1343 1344 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1345 int security_unix_may_send(struct socket *sock, struct socket *other); 1346 int security_socket_create(int family, int type, int protocol, int kern); 1347 int security_socket_post_create(struct socket *sock, int family, 1348 int type, int protocol, int kern); 1349 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1350 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1351 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1352 int security_socket_listen(struct socket *sock, int backlog); 1353 int security_socket_accept(struct socket *sock, struct socket *newsock); 1354 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1355 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1356 int size, int flags); 1357 int security_socket_getsockname(struct socket *sock); 1358 int security_socket_getpeername(struct socket *sock); 1359 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1360 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1361 int security_socket_shutdown(struct socket *sock, int how); 1362 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1363 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1364 int __user *optlen, unsigned len); 1365 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1366 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1367 void security_sk_free(struct sock *sk); 1368 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1369 void security_sk_classify_flow(struct sock *sk, struct flowi_common *flic); 1370 void security_req_classify_flow(const struct request_sock *req, 1371 struct flowi_common *flic); 1372 void security_sock_graft(struct sock*sk, struct socket *parent); 1373 int security_inet_conn_request(const struct sock *sk, 1374 struct sk_buff *skb, struct request_sock *req); 1375 void security_inet_csk_clone(struct sock *newsk, 1376 const struct request_sock *req); 1377 void security_inet_conn_established(struct sock *sk, 1378 struct sk_buff *skb); 1379 int security_secmark_relabel_packet(u32 secid); 1380 void security_secmark_refcount_inc(void); 1381 void security_secmark_refcount_dec(void); 1382 int security_tun_dev_alloc_security(void **security); 1383 void security_tun_dev_free_security(void *security); 1384 int security_tun_dev_create(void); 1385 int security_tun_dev_attach_queue(void *security); 1386 int security_tun_dev_attach(struct sock *sk, void *security); 1387 int security_tun_dev_open(void *security); 1388 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1389 int security_sctp_bind_connect(struct sock *sk, int optname, 1390 struct sockaddr *address, int addrlen); 1391 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1392 struct sock *newsk); 1393 1394 #else /* CONFIG_SECURITY_NETWORK */ 1395 static inline int security_unix_stream_connect(struct sock *sock, 1396 struct sock *other, 1397 struct sock *newsk) 1398 { 1399 return 0; 1400 } 1401 1402 static inline int security_unix_may_send(struct socket *sock, 1403 struct socket *other) 1404 { 1405 return 0; 1406 } 1407 1408 static inline int security_socket_create(int family, int type, 1409 int protocol, int kern) 1410 { 1411 return 0; 1412 } 1413 1414 static inline int security_socket_post_create(struct socket *sock, 1415 int family, 1416 int type, 1417 int protocol, int kern) 1418 { 1419 return 0; 1420 } 1421 1422 static inline int security_socket_socketpair(struct socket *socka, 1423 struct socket *sockb) 1424 { 1425 return 0; 1426 } 1427 1428 static inline int security_socket_bind(struct socket *sock, 1429 struct sockaddr *address, 1430 int addrlen) 1431 { 1432 return 0; 1433 } 1434 1435 static inline int security_socket_connect(struct socket *sock, 1436 struct sockaddr *address, 1437 int addrlen) 1438 { 1439 return 0; 1440 } 1441 1442 static inline int security_socket_listen(struct socket *sock, int backlog) 1443 { 1444 return 0; 1445 } 1446 1447 static inline int security_socket_accept(struct socket *sock, 1448 struct socket *newsock) 1449 { 1450 return 0; 1451 } 1452 1453 static inline int security_socket_sendmsg(struct socket *sock, 1454 struct msghdr *msg, int size) 1455 { 1456 return 0; 1457 } 1458 1459 static inline int security_socket_recvmsg(struct socket *sock, 1460 struct msghdr *msg, int size, 1461 int flags) 1462 { 1463 return 0; 1464 } 1465 1466 static inline int security_socket_getsockname(struct socket *sock) 1467 { 1468 return 0; 1469 } 1470 1471 static inline int security_socket_getpeername(struct socket *sock) 1472 { 1473 return 0; 1474 } 1475 1476 static inline int security_socket_getsockopt(struct socket *sock, 1477 int level, int optname) 1478 { 1479 return 0; 1480 } 1481 1482 static inline int security_socket_setsockopt(struct socket *sock, 1483 int level, int optname) 1484 { 1485 return 0; 1486 } 1487 1488 static inline int security_socket_shutdown(struct socket *sock, int how) 1489 { 1490 return 0; 1491 } 1492 static inline int security_sock_rcv_skb(struct sock *sk, 1493 struct sk_buff *skb) 1494 { 1495 return 0; 1496 } 1497 1498 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1499 int __user *optlen, unsigned len) 1500 { 1501 return -ENOPROTOOPT; 1502 } 1503 1504 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1505 { 1506 return -ENOPROTOOPT; 1507 } 1508 1509 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1510 { 1511 return 0; 1512 } 1513 1514 static inline void security_sk_free(struct sock *sk) 1515 { 1516 } 1517 1518 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1519 { 1520 } 1521 1522 static inline void security_sk_classify_flow(struct sock *sk, 1523 struct flowi_common *flic) 1524 { 1525 } 1526 1527 static inline void security_req_classify_flow(const struct request_sock *req, 1528 struct flowi_common *flic) 1529 { 1530 } 1531 1532 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1533 { 1534 } 1535 1536 static inline int security_inet_conn_request(const struct sock *sk, 1537 struct sk_buff *skb, struct request_sock *req) 1538 { 1539 return 0; 1540 } 1541 1542 static inline void security_inet_csk_clone(struct sock *newsk, 1543 const struct request_sock *req) 1544 { 1545 } 1546 1547 static inline void security_inet_conn_established(struct sock *sk, 1548 struct sk_buff *skb) 1549 { 1550 } 1551 1552 static inline int security_secmark_relabel_packet(u32 secid) 1553 { 1554 return 0; 1555 } 1556 1557 static inline void security_secmark_refcount_inc(void) 1558 { 1559 } 1560 1561 static inline void security_secmark_refcount_dec(void) 1562 { 1563 } 1564 1565 static inline int security_tun_dev_alloc_security(void **security) 1566 { 1567 return 0; 1568 } 1569 1570 static inline void security_tun_dev_free_security(void *security) 1571 { 1572 } 1573 1574 static inline int security_tun_dev_create(void) 1575 { 1576 return 0; 1577 } 1578 1579 static inline int security_tun_dev_attach_queue(void *security) 1580 { 1581 return 0; 1582 } 1583 1584 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1585 { 1586 return 0; 1587 } 1588 1589 static inline int security_tun_dev_open(void *security) 1590 { 1591 return 0; 1592 } 1593 1594 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1595 struct sk_buff *skb) 1596 { 1597 return 0; 1598 } 1599 1600 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1601 struct sockaddr *address, 1602 int addrlen) 1603 { 1604 return 0; 1605 } 1606 1607 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1608 struct sock *sk, 1609 struct sock *newsk) 1610 { 1611 } 1612 #endif /* CONFIG_SECURITY_NETWORK */ 1613 1614 #ifdef CONFIG_SECURITY_INFINIBAND 1615 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1616 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1617 int security_ib_alloc_security(void **sec); 1618 void security_ib_free_security(void *sec); 1619 #else /* CONFIG_SECURITY_INFINIBAND */ 1620 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1621 { 1622 return 0; 1623 } 1624 1625 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1626 { 1627 return 0; 1628 } 1629 1630 static inline int security_ib_alloc_security(void **sec) 1631 { 1632 return 0; 1633 } 1634 1635 static inline void security_ib_free_security(void *sec) 1636 { 1637 } 1638 #endif /* CONFIG_SECURITY_INFINIBAND */ 1639 1640 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1641 1642 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1643 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1644 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1645 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1646 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1647 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1648 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1649 struct xfrm_sec_ctx *polsec, u32 secid); 1650 int security_xfrm_state_delete(struct xfrm_state *x); 1651 void security_xfrm_state_free(struct xfrm_state *x); 1652 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1653 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1654 struct xfrm_policy *xp, 1655 const struct flowi_common *flic); 1656 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1657 void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic); 1658 1659 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1660 1661 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1662 struct xfrm_user_sec_ctx *sec_ctx, 1663 gfp_t gfp) 1664 { 1665 return 0; 1666 } 1667 1668 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1669 { 1670 return 0; 1671 } 1672 1673 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1674 { 1675 } 1676 1677 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1678 { 1679 return 0; 1680 } 1681 1682 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1683 struct xfrm_user_sec_ctx *sec_ctx) 1684 { 1685 return 0; 1686 } 1687 1688 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1689 struct xfrm_sec_ctx *polsec, u32 secid) 1690 { 1691 return 0; 1692 } 1693 1694 static inline void security_xfrm_state_free(struct xfrm_state *x) 1695 { 1696 } 1697 1698 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1699 { 1700 return 0; 1701 } 1702 1703 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1704 { 1705 return 0; 1706 } 1707 1708 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1709 struct xfrm_policy *xp, 1710 const struct flowi_common *flic) 1711 { 1712 return 1; 1713 } 1714 1715 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1716 { 1717 return 0; 1718 } 1719 1720 static inline void security_skb_classify_flow(struct sk_buff *skb, 1721 struct flowi_common *flic) 1722 { 1723 } 1724 1725 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1726 1727 #ifdef CONFIG_SECURITY_PATH 1728 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1729 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1730 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1731 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1732 unsigned int dev); 1733 int security_path_truncate(const struct path *path); 1734 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1735 const char *old_name); 1736 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1737 struct dentry *new_dentry); 1738 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1739 const struct path *new_dir, struct dentry *new_dentry, 1740 unsigned int flags); 1741 int security_path_chmod(const struct path *path, umode_t mode); 1742 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1743 int security_path_chroot(const struct path *path); 1744 #else /* CONFIG_SECURITY_PATH */ 1745 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1746 { 1747 return 0; 1748 } 1749 1750 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1751 umode_t mode) 1752 { 1753 return 0; 1754 } 1755 1756 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1757 { 1758 return 0; 1759 } 1760 1761 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1762 umode_t mode, unsigned int dev) 1763 { 1764 return 0; 1765 } 1766 1767 static inline int security_path_truncate(const struct path *path) 1768 { 1769 return 0; 1770 } 1771 1772 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1773 const char *old_name) 1774 { 1775 return 0; 1776 } 1777 1778 static inline int security_path_link(struct dentry *old_dentry, 1779 const struct path *new_dir, 1780 struct dentry *new_dentry) 1781 { 1782 return 0; 1783 } 1784 1785 static inline int security_path_rename(const struct path *old_dir, 1786 struct dentry *old_dentry, 1787 const struct path *new_dir, 1788 struct dentry *new_dentry, 1789 unsigned int flags) 1790 { 1791 return 0; 1792 } 1793 1794 static inline int security_path_chmod(const struct path *path, umode_t mode) 1795 { 1796 return 0; 1797 } 1798 1799 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1800 { 1801 return 0; 1802 } 1803 1804 static inline int security_path_chroot(const struct path *path) 1805 { 1806 return 0; 1807 } 1808 #endif /* CONFIG_SECURITY_PATH */ 1809 1810 #ifdef CONFIG_KEYS 1811 #ifdef CONFIG_SECURITY 1812 1813 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1814 void security_key_free(struct key *key); 1815 int security_key_permission(key_ref_t key_ref, const struct cred *cred, 1816 enum key_need_perm need_perm); 1817 int security_key_getsecurity(struct key *key, char **_buffer); 1818 1819 #else 1820 1821 static inline int security_key_alloc(struct key *key, 1822 const struct cred *cred, 1823 unsigned long flags) 1824 { 1825 return 0; 1826 } 1827 1828 static inline void security_key_free(struct key *key) 1829 { 1830 } 1831 1832 static inline int security_key_permission(key_ref_t key_ref, 1833 const struct cred *cred, 1834 enum key_need_perm need_perm) 1835 { 1836 return 0; 1837 } 1838 1839 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1840 { 1841 *_buffer = NULL; 1842 return 0; 1843 } 1844 1845 #endif 1846 #endif /* CONFIG_KEYS */ 1847 1848 #ifdef CONFIG_AUDIT 1849 #ifdef CONFIG_SECURITY 1850 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1851 int security_audit_rule_known(struct audit_krule *krule); 1852 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1853 void security_audit_rule_free(void *lsmrule); 1854 1855 #else 1856 1857 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1858 void **lsmrule) 1859 { 1860 return 0; 1861 } 1862 1863 static inline int security_audit_rule_known(struct audit_krule *krule) 1864 { 1865 return 0; 1866 } 1867 1868 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1869 void *lsmrule) 1870 { 1871 return 0; 1872 } 1873 1874 static inline void security_audit_rule_free(void *lsmrule) 1875 { } 1876 1877 #endif /* CONFIG_SECURITY */ 1878 #endif /* CONFIG_AUDIT */ 1879 1880 #ifdef CONFIG_SECURITYFS 1881 1882 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1883 struct dentry *parent, void *data, 1884 const struct file_operations *fops); 1885 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1886 struct dentry *securityfs_create_symlink(const char *name, 1887 struct dentry *parent, 1888 const char *target, 1889 const struct inode_operations *iops); 1890 extern void securityfs_remove(struct dentry *dentry); 1891 1892 #else /* CONFIG_SECURITYFS */ 1893 1894 static inline struct dentry *securityfs_create_dir(const char *name, 1895 struct dentry *parent) 1896 { 1897 return ERR_PTR(-ENODEV); 1898 } 1899 1900 static inline struct dentry *securityfs_create_file(const char *name, 1901 umode_t mode, 1902 struct dentry *parent, 1903 void *data, 1904 const struct file_operations *fops) 1905 { 1906 return ERR_PTR(-ENODEV); 1907 } 1908 1909 static inline struct dentry *securityfs_create_symlink(const char *name, 1910 struct dentry *parent, 1911 const char *target, 1912 const struct inode_operations *iops) 1913 { 1914 return ERR_PTR(-ENODEV); 1915 } 1916 1917 static inline void securityfs_remove(struct dentry *dentry) 1918 {} 1919 1920 #endif 1921 1922 #ifdef CONFIG_BPF_SYSCALL 1923 union bpf_attr; 1924 struct bpf_map; 1925 struct bpf_prog; 1926 struct bpf_prog_aux; 1927 #ifdef CONFIG_SECURITY 1928 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1929 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1930 extern int security_bpf_prog(struct bpf_prog *prog); 1931 extern int security_bpf_map_alloc(struct bpf_map *map); 1932 extern void security_bpf_map_free(struct bpf_map *map); 1933 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1934 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1935 #else 1936 static inline int security_bpf(int cmd, union bpf_attr *attr, 1937 unsigned int size) 1938 { 1939 return 0; 1940 } 1941 1942 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1943 { 1944 return 0; 1945 } 1946 1947 static inline int security_bpf_prog(struct bpf_prog *prog) 1948 { 1949 return 0; 1950 } 1951 1952 static inline int security_bpf_map_alloc(struct bpf_map *map) 1953 { 1954 return 0; 1955 } 1956 1957 static inline void security_bpf_map_free(struct bpf_map *map) 1958 { } 1959 1960 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1961 { 1962 return 0; 1963 } 1964 1965 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1966 { } 1967 #endif /* CONFIG_SECURITY */ 1968 #endif /* CONFIG_BPF_SYSCALL */ 1969 1970 #ifdef CONFIG_PERF_EVENTS 1971 struct perf_event_attr; 1972 struct perf_event; 1973 1974 #ifdef CONFIG_SECURITY 1975 extern int security_perf_event_open(struct perf_event_attr *attr, int type); 1976 extern int security_perf_event_alloc(struct perf_event *event); 1977 extern void security_perf_event_free(struct perf_event *event); 1978 extern int security_perf_event_read(struct perf_event *event); 1979 extern int security_perf_event_write(struct perf_event *event); 1980 #else 1981 static inline int security_perf_event_open(struct perf_event_attr *attr, 1982 int type) 1983 { 1984 return 0; 1985 } 1986 1987 static inline int security_perf_event_alloc(struct perf_event *event) 1988 { 1989 return 0; 1990 } 1991 1992 static inline void security_perf_event_free(struct perf_event *event) 1993 { 1994 } 1995 1996 static inline int security_perf_event_read(struct perf_event *event) 1997 { 1998 return 0; 1999 } 2000 2001 static inline int security_perf_event_write(struct perf_event *event) 2002 { 2003 return 0; 2004 } 2005 #endif /* CONFIG_SECURITY */ 2006 #endif /* CONFIG_PERF_EVENTS */ 2007 2008 #endif /* ! __LINUX_SECURITY_H */ 2009